In a study that borders on painful, people who listened to the sounds of nails and squeaky chalk dragged across a chalkboard have helped scientists pinpoint which frequencies cause people to cringe.

Just the thought of nails raking across a chalkboard is enough to send shivers down many people’s spines — but the reasoning behind this reaction has remained a mystery for decades. Scientists have ...

Even imagining the sound of a person's fingernails scraping down a chalkboard is horrible. Now we know why the noise is such a special kind of awful. The frequency of ...

We've been asking you to send in bits of audio you find interesting or memorable. Today's sound clip brings us a vanishing sound from America's classrooms. Ms. STEPHANIE THIBAULT (Sonoma State ...